CN110254165B - Heat pump and battery liquid cooling system - Google Patents
Heat pump and battery liquid cooling system Download PDFInfo
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- CN110254165B CN110254165B CN201910505927.3A CN201910505927A CN110254165B CN 110254165 B CN110254165 B CN 110254165B CN 201910505927 A CN201910505927 A CN 201910505927A CN 110254165 B CN110254165 B CN 110254165B
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- 238000001816 cooling Methods 0.000 title claims abstract description 32
- 239000007788 liquid Substances 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 38
- 238000005057 refrigeration Methods 0.000 claims description 28
- 238000007791 dehumidification Methods 0.000 claims description 10
- 239000003507 refrigerant Substances 0.000 claims description 9
- 238000004378 air conditioning Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 5
- 238000010257 thawing Methods 0.000 claims description 2
- 239000002826 coolant Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00007—Combined heating, ventilating, or cooling devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
- B60H1/0075—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models the input being solar radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
- B60H1/00792—Arrangement of detectors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
- B60H1/2218—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters controlling the operation of electric heaters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
- H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention relates to the technical field of air conditioners, in particular to a heat pump and battery liquid cooling system. The heat pump and battery liquid cooling system comprises an air conditioner box, an external temperature sensor, a sunlight sensor, a battery pack, a VCU (vehicle control unit), a PT sensor a, a PT sensor b, a normal electromagnetic valve 1, an electromagnetic valve 2, a four-way reversing valve, a compressor, a thermal expansion valve, an electronic expansion valve, an external heat exchanger, and an air conditioner box, wherein the air conditioner box comprises a high-pressure air PTC (positive temperature coefficient) containing auxiliary heating, an internal heat exchanger and an air blower, and the battery pack comprises a PTC and an evaporator 2.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a heat pump and battery liquid cooling system.
Background
With the development of technology, the conventional heat pump type air conditioner is applied to automobiles, and particularly, the conventional heat pump type air conditioner is most widely applied to electric automobiles, and generally includes a compressor, a four-way valve, an exterior heat exchanger, a throttle valve, and an interior heat exchanger, which form a refrigerant circuit, and the interior heat exchanger is used as an evaporator when cooling is required and used as a condenser when heating is required by reversing the four-way valve.
The conventional air conditioner for the electric vehicle is basically single-refrigeration, heating is completed by a Positive Temperature Coefficient (PTC) heater or a water PTC, and although a four-way reversing valve is also involved in the prior art to realize refrigeration and heating modes, the air conditioner system has a complex structure, low heating efficiency and high energy consumption.
Disclosure of Invention
In order to solve the technical problems, the invention provides a heat pump and battery liquid cooling system, which realizes effective control in different modes, well combines coordinated operation of an air conditioner and a battery in modes of refrigeration, heating, dehumidification, deicing and the like, and effectively reduces vehicle-mounted energy consumption.
According to the embodiment of the invention, the invention provides a heat pump and battery liquid cooling system, which comprises an air conditioner box, an external temperature sensor, a sunlight sensor, a battery pack, a vehicle control unit VCU, a PT sensor a, a PT sensor b, an electromagnetic valve 1 and an electromagnetic valve 2, wherein the external temperature sensor is arranged outside the vehicle; the system is characterized by also comprising a four-way reversing valve, a compressor, a thermal expansion valve, an electronic expansion valve and an external heat exchanger, wherein the air conditioning box comprises a high-pressure air PTC (positive temperature coefficient) containing auxiliary heating, an internal heat exchanger and a blower, and the battery pack comprises a PTC and an evaporator 2;
an outlet of the compressor is communicated with a port D of the four-way reversing valve through a high-pressure PT sensor, one outlet of a port E of the four-way reversing valve is communicated with a port on one side of the inner heat exchanger through a PT sensor a, the other outlet of the four-way reversing valve is communicated with the battery pack through the electromagnetic valve 2, a port S of the four-way reversing valve is communicated with an inlet of the compressor through an A/D converter and a low-pressure PT sensor, and a port C of the four-way reversing valve is communicated with a port on one side of the outer heat exchanger;
the other side port of the inner heat exchanger is communicated with a battery pack through the electronic expansion valve, the electromagnetic valve 1 and the thermal expansion valve;
the system realizes four modes of refrigeration, heating, dehumidification and deicing through the control of the VCU on the compressor and the four-way reversing valve.
Preferably, the flow path for controlling the refrigeration mode is specifically that an outlet of the compressor passes through a port D of the four-way reversing valve, then flows to the outer heat exchanger from a port C of the four-way reversing valve, and then flows into the compressor through the inner heat exchanger and the a/D converter, wherein in the refrigeration mode, the inner heat exchanger is an evaporator, and the outer heat exchanger is a condenser.
Preferably, the cooling mode includes one or both of a/C cooling and battery cooling.
Preferably, when the battery in the refrigeration mode needs to be refrigerated, the electromagnetic valve 1 and the thermostatic expansion valve are opened, and meanwhile, the rotating speed of the compressor is increased by 1500 rmp.
Preferably, the flow path for controlling the heating mode is specifically that an outlet of the compressor passes through a port D of the four-way reversing valve, then flows to the inner heat exchanger from a port E of the four-way reversing valve, and then flows into the compressor through the outer heat exchanger and the a/D converter, wherein in the heating mode, the inner heat exchanger is a condenser, and the outer heat exchanger is an evaporator.
Preferably, the heating mode includes APTC heating and battery heating, wherein the battery heating is realized by controlling the PTC by the vehicle control unit VCU, and the APTC heating is controlled when the heat pump cannot reach a set temperature.
Preferably, the flow path for controlling the dehumidification mode is the same as the flow path in the refrigeration mode, and the compressor is not started when the temperature is below 5 ℃.
Preferably, the ice melting control mode adopts the same flow path as that in the refrigeration mode, so that the refrigeration and ice melting are started, the auxiliary heating high-pressure air PTC is started, and when the battery needs to be cooled, the refrigerant passage of the indoor evaporator is closed.
Preferably, the system further comprises a refrigerant side exhaust port, a refrigerant side exhaust port and pt sensors respectively arranged at the two positions.
Preferably, the air conditioning box comprises an evaporation temperature sensor and an in-vehicle temperature sensor.
By adopting the technical scheme of the invention, the invention has the following technical effects:
1. under different modes, different air outlet temperature setting requirements and different blowing foot temperature requirements can be realized, and different circulation modes can be adopted;
2. effectively reducing the energy consumption.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic diagram of a heat pump and battery liquid cooling system cycle according to the present invention;
fig. 2 is a schematic diagram of the refrigeration of a heat pump and a battery liquid cooling system according to the present invention.
Fig. 3 is a schematic diagram of heating of a heat pump and a battery liquid cooling system according to the present invention.
Fig. 4 is a schematic diagram of dehumidification of a heat pump and a battery liquid cooling system according to the present invention.
Fig. 5 is a schematic diagram of the heat pump and the battery liquid cooling system for deicing according to the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
As shown in fig. 1, the invention provides a heat pump and battery liquid cooling system, which comprises an air conditioning box, an external temperature sensor, a sunlight sensor, a battery pack, a vehicle control unit VCU, a PT sensor a, a PT sensor b, an electromagnetic valve 1 and an electromagnetic valve 2; the system is characterized by also comprising a four-way reversing valve, a compressor, a thermal expansion valve, an electronic expansion valve and an external heat exchanger, wherein the air conditioning box comprises a high-pressure air PTC (positive temperature coefficient) containing auxiliary heating, an evaporation temperature sensor, an in-vehicle temperature sensor, an internal heat exchanger and an air blower, and the battery pack comprises a PTC and an evaporator 2; the system also comprises a refrigerant side air outlet, a refrigerant side air outlet and pt sensors respectively arranged at the two positions.
In the embodiment of the invention, the compressor is used for driving a refrigerant to flow in the pipeline, and the high-pressure PT sensor and the low-pressure PT sensor are used for collecting the pressure and the temperature of an air suction port and an air exhaust port of the compressor and used as the basis for controlling the rotating speed of the compressor, the electronic expansion valve, the thermal expansion valve, the PWM fan and the PWM blower in four different modes by the VCU of the vehicle controller.
An outlet of the compressor is communicated with a port D of the four-way reversing valve through a high-pressure PT sensor, one outlet of a port E of the four-way reversing valve is communicated with a port on one side of the inner heat exchanger through a PT sensor a, the other outlet of the four-way reversing valve is communicated with the battery pack through the electromagnetic valve 2, a port S of the four-way reversing valve is communicated with an inlet of the compressor through an A/D converter and a low-pressure PT sensor, and a port C of the four-way reversing valve is communicated with a port on one side of the outer heat exchanger;
the other side port of the inner heat exchanger is communicated with a battery pack through the electronic expansion valve, the electromagnetic valve 1 and the thermal expansion valve;
the system realizes four modes of refrigeration, heating, dehumidification and deicing through the control of the vehicle control unit VCU on the compressor and the four-way reversing valve, and the vehicle control unit VCU is used for inputting various signals and outputting various control signals.
In FIGS. 1-5, comp is a compressor, EXV is an electronic expansion valve, Four-way valve is a Four-way reversing valve, TXV is a thermostatic expansion valve, In-HEX is an internal heat exchanger, Out-HEX is an external heat exchanger, HPT-Sensor is a high pressure Pt Sensor, LPT-Sensor is a low pressure Pt Sensor, SOV is an electromagnetic valve, EVAP is an evaporator, COND is a condenser, HAPTC is a high pressure air PTC, Brower is a blower, CT DUSENSOR is an evaporation temperature Sensor, INSIDE SENSOR is an In-vehicle temperature Sensor, OUTSIDE SENSOR is an Out-vehicle temperature Sensor, and SUN SENSOR is a sunlight Sensor.
As shown in fig. 2, the flow path for controlling the refrigeration mode is specifically that the outlet of the compressor passes through the D port of the four-way reversing valve, then flows to the outer heat exchanger from the C port of the four-way reversing valve, and then flows into the compressor through the inner heat exchanger and the a/D converter, wherein in the refrigeration mode, the inner heat exchanger is an evaporator, and the outer heat exchanger is a condenser.
The refrigeration mode comprises one or two of A/C refrigeration and battery refrigeration.
When the battery in the refrigeration mode needs refrigeration, the electromagnetic valve 1 and the thermal expansion valve are opened, and meanwhile, the rotating speed of the compressor is increased by 1500 rmp.
In this embodiment, different outlet temperatures are realized in the refrigeration mode, the breathing point is a temperature calibration position, the internal circulation mode is preferentially adopted, and an internal and external air mixing mode can be adopted when necessary.
When the battery needs air cooling, a VCU (vehicle control unit) sends a control instruction, two electromagnetic valves are opened, a thermostatic expansion valve is opened at the same time, and the rotating speed of a compressor is increased by 1500 rmp; if only the battery is separately air-cooled in practical application, the rotating speed of the compressor is 2400rmp, and the rotating speed of the fan of the condenser is adjusted through PWM.
In the system of the embodiment, the exhaust temperature of the compressor is not more than 110 ℃, the exhaust pressure is not more than 2.2MPa.A, the rotating speed range of the compressor is 1100-5500 rmp, the rotating speed is not easy to be too high, and large noise is easy to generate.
As shown in fig. 3, the flow path for controlling the heating mode is specifically that the outlet of the compressor passes through the port D of the four-way reversing valve, then flows to the inner heat exchanger from the port E of the four-way reversing valve, and then flows into the compressor through the outer heat exchanger and the a/D converter, wherein in the heating mode, the inner heat exchanger is a condenser, and the outer heat exchanger is an evaporator.
The heating mode comprises APTC heating and battery heating, wherein the battery heating is realized by controlling the PTC by the VCU of the vehicle control unit, and when the heat pump cannot reach the set temperature, the PTC is controlled to heat.
In this embodiment, the system controls the heating mode to realize different foot blowing temperature requirements, preferably adopts an internal circulation mode, can adopt internal and external mixed air if necessary, takes the foot step temperature as a calibration position, and adjusts the rotating speed of the condenser fan through PWM. When the heat pump can not reach the set temperature, the PTC air heater APTC is started to realize heating.
As shown in fig. 4, the flow path for the dehumidification control mode is the same as the flow path for the cooling mode, and the compressor is not turned on when the temperature is below 5 ℃.
In the embodiment of the invention, a refrigeration and APTC working mode is adopted, the compressor is not started at the temperature below 5 ℃, the surface temperature of the evaporator in a dehumidification mode is more than 5 ℃ and 2-4 ℃ lower than the dew point temperature, the requirements of different air outlet temperature settings can be met, and the temperature of the defrosting air outlet is 5 ℃ higher than the ambient temperature in a default mode.
As shown in fig. 5, the ice-melting control mode adopts the same flow path as that in the cooling mode, so that the cooling and ice melting are started, the high-pressure air PTC for auxiliary heating is started, and the refrigerant passage of the interior evaporator is closed when the battery needs to be cooled.
It will be evident to those skilled in the art that the embodiments of the present invention are not limited to the details of the foregoing illustrative embodiments, and that the embodiments of the present invention are capable of being embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the embodiments being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. Several units, modules or means recited in the system, apparatus or terminal claims may also be implemented by one and the same unit, module or means in software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention and not for limiting, and although the embodiments of the present invention are described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the embodiments of the present invention without departing from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A heat pump and battery liquid cooling system comprises an air conditioner box, an external temperature sensor, a sunlight sensor, a battery pack, a vehicle control unit VCU, a PT sensor a, a PT sensor b, an electromagnetic valve 1 and an electromagnetic valve 2; the system is characterized by also comprising a four-way reversing valve, a compressor, a thermal expansion valve, an electronic expansion valve and an external heat exchanger, wherein the air conditioning box comprises a high-pressure air PTC (positive temperature coefficient) containing auxiliary heating, an internal heat exchanger and a blower, and the battery pack comprises a PTC and an evaporator;
an outlet of the compressor is communicated with a port D of the four-way reversing valve through a high-pressure PT sensor, one outlet of a port E of the four-way reversing valve is communicated with a port on one side of the inner heat exchanger through a PT sensor a, the other outlet of the four-way reversing valve is communicated with the battery pack through the electromagnetic valve 2, a port S of the four-way reversing valve is communicated with an inlet of the compressor through an A/D converter and a low-pressure PT sensor, and a port C of the four-way reversing valve is communicated with a port on one side of the outer heat exchanger;
the other side port of the inner heat exchanger is communicated with a battery pack through the electronic expansion valve, the electromagnetic valve 1 and the thermal expansion valve;
the system realizes four modes of refrigeration, heating, dehumidification and deicing through the control of the VCU on the compressor and the four-way reversing valve;
wherein,
the flow path for controlling the refrigeration mode is specifically that an outlet of the compressor flows through a port D of the four-way reversing valve, then flows to the outer heat exchanger from a port C of the four-way reversing valve, and then flows into the compressor through the inner heat exchanger and the A/D converter, wherein in the refrigeration mode, the inner heat exchanger is used as an evaporator, and the outer heat exchanger is used as a condenser;
the flow path for controlling the heating mode is specifically that an outlet of the compressor flows through a port D of the four-way reversing valve, then flows to the inner heat exchanger through a port E of the four-way reversing valve, and then flows into the compressor through the outer heat exchanger and the A/D converter, wherein in the heating mode, the inner heat exchanger is used as a condenser, and the outer heat exchanger is used as an evaporator;
the ice melting control mode adopts the same flow path as that in the refrigeration mode, so that refrigeration and ice melting are started, the high-pressure air PTC for auxiliary heating is started, and when the battery needs to be cooled, a refrigerant passage of the indoor evaporator is closed;
the flow path for controlling the dehumidification mode is the same as the flow path in the refrigeration mode, the refrigeration and air heater APTC work mode is adopted, the compressor is not started at the temperature below 5 ℃, the surface temperature of the evaporator in the dehumidification mode is higher than 5 ℃ and lower than the dew point temperature by 2-4 ℃ so as to meet the set requirements of different air outlet temperatures, and the temperature of the defrosting air outlet is 5 ℃ higher than the ambient temperature in the default mode.
2. The heat pump and battery liquid cooling system of claim 1, wherein the cooling mode includes one or both of a/C cooling and battery cooling.
3. A heat pump and battery liquid cooling system as claimed in claim 2, wherein when the battery in the cooling mode needs cooling, the solenoid valve 1 and the thermostatic expansion valve are opened, and the compressor speed is increased by 1500 rmp.
4. The heat pump and battery liquid cooling system of claim 1, wherein the heating modes include air heater APTC heating and battery heating, wherein the battery heating is achieved by the vehicle control unit VCU controlling PTC of the battery pack, and when the heat pump fails to reach a set temperature, APTC heating is controlled.
5. The heat pump and battery liquid cooling system of claim 1, further comprising a coolant side exhaust port, and pt sensors respectively disposed therein.
6. The heat pump and battery liquid cooling system of claim 1, wherein the air conditioning compartment includes an evaporative temperature sensor, an in-vehicle temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910505927.3A CN110254165B (en) | 2019-06-12 | 2019-06-12 | Heat pump and battery liquid cooling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910505927.3A CN110254165B (en) | 2019-06-12 | 2019-06-12 | Heat pump and battery liquid cooling system |
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| CN110254165A CN110254165A (en) | 2019-09-20 |
| CN110254165B true CN110254165B (en) | 2021-06-22 |
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| CN113203125B (en) * | 2021-06-04 | 2022-06-03 | 安徽江淮松芝空调有限公司 | Mould removing system and method for vehicle air conditioner evaporator |
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